<script setup lang="ts">
import { getTreeListAPI } from '@/apis/system';
import type { RoleData, RoleParams } from '@/types/system';
import { ElMessage, type FormInstance, type FormRules } from 'element-plus';
import type { TreeInstance } from 'element-plus/lib/components/index.js';
import { ref } from 'vue';

// 表单校验
const  roleForm=ref<RoleParams>({
    roleName:'',
    remark:'',
    perms:[]
})
// 获取权限列表(所有树形)
const treeList = ref<RoleData[]>([])
const getTreeList = async () => {
  const res = await getTreeListAPI()
  treeList.value = res.data
}
getTreeList()

const treeRefs = ref<TreeInstance[]>([])


const roleFormRef = ref<FormInstance>()
const roleRules = ref<FormRules<RoleParams>>({
  roleName: [
    { required: true, message: '请输入角色名称', trigger: 'blur' },
    { min: 2, max: 20, message: '长度在 2 到 20 个字符', trigger: 'blur' }
  ],
  remark: [
    { required: true, message: '请输入角色描述', trigger: 'blur' },
  ]
})


// 步骤切换
const activeStep = ref(2);
// 上一步
const descStep = () => {
  activeStep.value--;
};
// 下一步
const nextStep = async () => {
  try {

    // 1. 校验表单1 - 常规表单
    if(activeStep.value===1){
        // 满足进入下一步
        await roleFormRef.value?.validate()
        activeStep.value++
    }
     else if(activeStep.value===2){
         // 2. 校验表单2 - 树形节点选中
    roleForm.value.perms = [] // 先清空输入，避免 push 累加
    treeRefs.value.forEach(tree =>{
      // 获取选中的节点
      const res = tree.getCheckedKeys() as number[]
      // 追加到数组值
      roleForm.value.perms.push(res)
    })
            // 数组扁平化，判断数字是否为空 数组.flat()
    if(roleForm.value.perms.flat().length===0){
        ElMessage.error('请至少选择一项权限')
    }
    else{
         // 所有校验没问题，进入下一步
       activeStep.value++
    }

   
        
    }
  } catch {
    
  }
}
// 确认添加
const onSubmit=()=>{
    ElMessage.success('待完成')
}

</script>

<template>
  <div class="add-role">
    <header class="add-header">
      <el-page-header content="添加角色" @back="$router.back()" />
    </header>
    <main class="add-main">
      <div class="step-container">
        <el-steps direction="vertical" :active="activeStep">
          <el-step title="角色信息" />
          <el-step title="权限信息" />
          <el-step title="检查并完成" />
        </el-steps>
      </div>
      <div class="form-container"  v-show="activeStep === 1" >
        <div class="title">角色信息</div>
        <div class="form">
            <el-form ref="roleFormRef" class="form-box" :model="roleForm" :rules="roleRules">
            <el-form-item label="角色名称" prop="roleName">
              <el-input v-model="roleForm.roleName" />
            </el-form-item>
            <el-form-item label="角色描述" prop="remark">
              <el-input v-model="roleForm.remark" type="textarea" />
            </el-form-item>
          </el-form>
        </div>
      </div>
      <div class="form-container"  v-show="activeStep === 2" >
        <div class="title" >权限配置</div>
        <div class="form">
            <div class="tree-wrapper">
            <div v-for="item in treeList" :key="item.id" class="tree-item">
              <div class="tree-title">{{ item.title }}</div>
              <el-tree 
                :data="item.children" 
                show-checkbox 
                default-expand-all 
                node-key="id"
                :props="{ label: 'title' }" 
                ref="treeRefs"
              />
            </div>
          </div>
  </div>
      </div>
      <div class="form-container"  v-show="activeStep === 3" >
        <div class="title">检查并完成</div>
        <div class="form">
          检查并完成内容
        </div>
      </div>
    </main>
    <footer class="add-footer">
      <div class="btn-container">
        <el-button   v-if="activeStep > 1"  @click="descStep">上一步</el-button>
        <el-button  v-if="activeStep < 3"@click="nextStep" type="primary">下一步</el-button>
         <el-button v-if="activeStep === 3" type="primary" @click="onSubmit" > 确认添加</el-button>
    </div>
    {{ roleForm }}
    </footer>
  </div>
</template>


<style scoped lang="scss">
.add-role {
  background-color: #f4f6f8;
  height: 100vh;

  .add-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 64px;
    line-height: 64px;
    font-size: 16px;
    font-weight: bold;
    background-color: #fff;

    .left {
      span {
        margin-right: 4px;
      }

      .arrow {
        cursor: pointer;
      }
    }

    .right {
      text-align: right;
    }
  }

  .add-main {
    position: fixed;
    top: 64px;
    bottom: 88px;
    width: 100%;
    overflow-y: auto;
    background: #f4f6f8;
    padding: 20px 30px;
    display: flex;

    .step-container {
      height: 400px;
      width: 200px;
    }

    .form-container {
      flex: 1;
      background-color: #fff;
      overflow-y: auto;

      .title {
        height: 60px;
        line-height: 60px;
        padding-left: 20px;
      }

      .form {
        margin-bottom: 20px;
        padding: 20px 65px 24px;

        .el-form {
          display: flex;
          flex-wrap: wrap;
        }

        .info {
          font-size: 14px;
          color: #666;

          .form-item {
            margin-bottom: 20px;
          }
        }
      }

      .form-box {
        width: 600px;
        display: flex;
        flex-direction: column;
      }
    }
  }

  .add-footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 24px 50px;
    color: #000000d9;
    font-size: 14px;
    background: #fff;
    text-align: center;
    z-index: 10001;
  }

  .tree-wrapper {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;

    .tree-item {
      flex: 1;
      padding: 0px 4px;
      text-align: center;

      .tree-title {
        background: #f5f7fa;
        text-align: center;
        padding: 10px 0;
        margin-bottom: 12px;
      }
    }
  }
}
</style>